Smoke-consuming furnace.



G. PHELPS.

SMOKE GONSUMING FURNACE. APPLICATION FILED JAN. 22. 1907.

No. 885,950. PATENTED APR. 28, 1908 g 3 3 Q 1 M :3 W J 1 I I 10 4 i b Ia (11 b I! H M F 0 Q m r 1 i Q a THE uonms Pz'rtks co., vnsmucmu, n. c.

DUO

- connection with bituminous coal and de CHARLES PHELPS, OF OSKALOOSA, IOWA.

SMOKE-CONSUMING FURNACE.

Specification of Letters Patent. 7

Patented April as, 1908.

Application filed January 22, 1907. Serial No. 353,424.

To all whom it may concern:

Be it known that I, CHARLES PHELPS, a citizen of the United States,residing at Oskaloosa, in the county of Mahaska and State of Iowa, haveinvented a certain new and useful Smoke-Consuming Furnace, of which thefollowing is a specification.

The object of my invention is to provide a furnace of simple, durableand inexpensive construction, especially designed for use in signed toconsume the smoke, soot and gases arising from the burning fuel beforeit passes to the flue.

A further object is to provide a furnace to heat water and so arrangedthat it will utilize the maximum amount of the heat from the fire and toutilize the water pipes for the purby the objects contemplated areattained, as

hereinafter more fully set forth, pointed out in my claims andillustrated in the accompanying drawings, in which.

Figure 1 shows a central, vertical, sectional view of a furnaceembodying my invention. Fig. 2 shows a horizontal, sectional view on theline 2-2 of Fig. 1, and Fig. 3 shows a like view on the line 3-3 of Fig.1.

Referring to the accompanying drawings, I have used the referencenumeral 10 to indicate the furnace casing provided at its front with thefuel door 11, an ash-pit door 12 and a door 13 directly above the grateto provide access to the grate. Arranged above the ash-pit is a grate 14of ordinary construction extending from the furnace front rearwardlyabout two-thirds of the distance to the rear wall. A transversepartition 15 is provided extending from the rear of the grate downwardlyand transversely of the furnace forming the ash-pit 16 and a dust pit orchamber 17 at the rear of said partition, a door 18 is provided throughwhich access may be had to the dust pit. At the rear of the dust pit isthe flue opening 19. Above the partition 15 is a water chamber 20extending transversely of the furnace. Arranged at the rear of the firebox, on top of said Water chamber is a fire brick partition 21 extendedacross the furnace and upwardly-to a point spaced apart from the top ofthe furnace. The chamber in front of said partition is the fire box, thechamber above the partition and in the rear of the partition is themixing and combustion chamber. Extended transversely of the furnacedirectly in the rear of the furnace front and substantially in line withthe top of the partition 20 is a water chamber 22. Extendedlongitudinally of the furnace at the central portion of its top is awater chamber 23 and extended across the rear of the furnace below thewater chamber 23 is a water chamber 24. Two water chambers 25 extendfrom front to rear of the furnace in the same horizontal plane as thewater chamber 20.

At each side of the interior of the furnace, I have provided a series ofwater pipes 26 with their lower ends connected to and communicating withthe water chambers 25 and their upper portions provided with elbows 27and extended inwardly and connected to and communicating with the waterchamber 23.

In the back of the part designated as the fire box is a series of waterpipes 28 connected to and communicating with the water chamber 20extended upwardly in front of the partition 21 and provided with elbows29 and extended horizontally to the water chamber 22 with which theycommunicate. This water chamber 22 is provided with a pipe 30 connectingto the water chamber 23 and providing communication between saidchambers.

Attached to and communicating with the rear of the chamber 20 is aseries of water pipes 31 extending upwardly adjacent to the rear of thewall 21 and communicating -at their upper ends with the water chamber24. A second set of pipes 32 is provided, with their lower endsconnected to and communicating with the chamber 20 and their uprightportions arranged adjacent to the rear furnace wall and their upper endsattached to and communicating with the water chamber 24. The spacebetween and surrounding the pipes 31 and 32 forms the lower part of vthecombustion chamber and all of the products of combustion must passthrough this space in close contact with said pipes before passing tothe fine. A short pipe 33 connects the water chambers 23 and 24 and Thehot water supply pipe 34 communicates with the central portion of thewater cham ber 23.

In practical operation and assuming that a fire is burning upon thegrate 14 and that large quantities of smoke, soot and gases are arisingtherefrom, these products of combustion will pass upwardly through thefire box. When they strike the horizontal portions of the pipes 28, saidpipes will serve as deflectors and cause the currents of smoke, gas andair arising from the fire to be thoroughly com mingled. This comminglingof the products of combustion and air is materially aided on account ofthe fact that the deflector tubes 28 are only a short distance from thetop of the furnace and all of the products of combustion are turned totravel backwardly toward the rear of the furnace and then downwardly. Itis well known that by thoroughly mixing smoke, gas and air when at theproper temperature, the products of combustion will ignite and burn.After being thus burned they will pass downwardly and out through theflue opening 19.

One of the important features of my inventionis that the horizontalportions of the deflectors 28 are so positioned within the furnace thatthe area of the combustion chamber above them will be from aboutone-fifth to two-fifths of the area of the fire box. I have discoveredthat when a furnace is constructed having substantially the proportionsreferred to, the fire will burn readily and the smoke, gases and airpassing through the grate will fill the fire box and be somewhatretarded therein before passing to the combustion chamber.Therefore,when these products of combustion pass out of the fire boxthey will be given an opportunity to expand and they will also bethoroughlIy mixed and commingled with eachother. t is this comminglingand mixing of the products of combustion occurring at the same time thatthey are expanding that puts them in proper condition for igniting andburning.

Another one of the important features of my invention is the relativearrangement of the water chambers and the water pipes. These are soarranged that they may be readily, quickly and easily assembled and areso disposed that they will utilize the heat arising from the fire andpassing through the fire box and combustion chamber to the maximumamount. Furthermore they are so arranged as to roduce a rapidcirculation of water when subjected to the heat arising from a fire. i

Having thus described my invention, what I claim and desire to secure byLetters Patent of the United States, therefore is- 1. In a furnace, thecombination of a casing, a grate, two water chambers extended along thesides of the casing adjacent to the sides of the grate, a water chamberextended across the furnace above the rear of the grate, and spacedapart from the rear of the casing, a fire wall above said latter waterchamber extended upwardly and spaced apart from the top of the casing, awater chamber extended across the top of the casing at the rear uppercorner thereof, a water chamber extending from the front to the rear ofthe casing near the top thereon, a series of pipes fixed to andcommunicating with each of the chambers at the sides of the grate,extended upwardly and then inwardly and fixed to and communicating withthe chamber at the top of the casing, a series of pipes fixed to andcommunicating with the water chamber at the rear of the grate, extendedupwardly adjacent to the rear of the fire wall, and then rearwardly andconnected to and communicating with the water chamber at the rear uppercorner of the casing, a second series of pipes fixed to andcommunicating with the rear of the water chamber in the rear of thegrate, extended first horizontally to a point near the rear of thecasing, and then upwardly and fixed to and communicating with thechamber at the rear upper corner of the casing, a pipe for providingcommunication between said water chambers at the top of the casing, anda water service pipe communieating with the water chamber at the top ofthe casing: I

2. In a furnace, the combination of a casfing, a grate, two waterchambers extending along the sides of the casing adjacent to the sidesofthe grate, a water chamber extended across the casing at the rear ofthe grate and spaced apart from the rear of the casing, a

fire wall on top of said chamber extended up= casing above the firebox,a water chamber extending from the front to the rear of the casing nearthe top thereof, a series of pipes fixed to and communicating witheach-of the chambers at the sides of the grate, and extended upwardlyand then inwardly and fixed to and communicating with the chamber at thetop of the casing, a series of pipes fixed to and communicating with thechamber at the rear of the grate, extended upwardly and thenhorizontally and fixed to and communicating with the chamber at thefront of the casing, a pipe for providing communication between saidwater chamber at the front of the casing, and said water chamber at thetop of the casing, and a water service pipe communicating with thechamber at the top of the casing.

3. In a furnace, the combination of a casing, a grate, two waterchambers extending along the sides of the casing, adjacent to the sidesof the grate, a water chamber extended across the furnace at the rear ofthe grate and spaced apart from the rear of the casing, a fire wall ontop of said chamber extended upwardly and spaced apart from the top ofthe casing, a water chamber at the front of the furnace above the firebox, a water chamber extended across the top of the casing at the rearupper corner thereof, a water chamber extendmg from the front to therear of the furnace near the top thereof, a series of pipes fixed to andcommunicating with each of the chambers at the side of the grate andextended upwardly and then inwardly and fixed to and communicating withthe chamber at the top of the furnace, a series of pipes fixed to andcommunicating with the chain ber at the rear of the grate extendedupwardly and then horizontally and fixed to and communicating with thechamber at the front of the furnace, a pipe providing com municationbetween said water chamber at the front of the furnace and said waterchamber at the top of the furnace, a series of pipes fixed to andcommunicating with the rear of the Water chamber at the rear of thegrate extended upwardly adjacent to the rear of the fire wall and thenrearwardly and connected to and communicating with the water 2 chamberat the rear upper corner of the furnace, a second series of pipes fixedto and communicating with the rear of the Water chamber in the rear ofthe grate, extended first horizontallyvto a point near the rear of 3 thecasing and then upwardly and fixed to and communicating with the chamberat the rear upper corner of the furnace, means for providingcommunication between said water chamber and the water chamber at the 3top of the furnace and a water service pipe communicating with the Waterchamber at the top of the furnace.

CHARLES PHELPS. l/Vitnesses:

HOMER PHELPs, ANNA PI-rELPs.

